MLA
Gerlig, J. J. Picking Cantaloup near Ocala, Fla. : [African American Laborers in a Field of Cantalope] [Hand Colored]. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 68. https://digital.library.emory.edu/purl/4579s4mw95-cor.
APA, 6th edition
Gerlig, J. J. Picking cantaloup near Ocala, Fla. : [African American laborers in a field of cantalope] [hand colored] (Box 68) [Photographic postcards]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4579s4mw95-cor.
Chicago
Gerlig, J. J. “Picking Cantaloup near Ocala, Fla. : [African American Laborers in a Field of Cantalope] [Hand Colored].” Photographic postcards. Robert Langmuir African American Photograph Collection, n.d. Box 68. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/4579s4mw95-cor.